Big Agnes Anvil Horn 15 (650 DownTek), Blue/Red, Regular, Left Zip

This is more than a sleeping bag to me, and has solved two specific problems I had with normal bags. First, this bag has a "pillow barn" that holds your pillow in place inside of the sleeping bag, in the hood area. Your pillow will not fall out of the bag, or off the pad using this and it works perfectly.Secondly, this bag attaches (via fabric/elastic corners) to your 20" to 25" sleeping pat/mat. This means you won't be sliding off your pad when you move around. I move around a lot at night as a mostly side sleeper and this has allowed me to move all I want without the bag getting tangled up all around me or falling off my pad (especially if I'm not on perfectly flat ground).You have to use a good, insulated mat with this bag, as the bottom of the bag that you lay on does not provide any insulation - NONE. Once you are aware of this, this is an outstanding bag when paired with an insulated sleeping pad. I would not recommend using this as a stand alone bag, not attached to a pad, unless it was very warm out (60*F plus, or so).If you've been cross shopping something like the zen bivvy bed system, and don't mind a little extra weight (depending on which zenbivvy bed you compare it to), this is a more simple option in my opinion. I pair this with a sleeping quilt that is 800fill power down when it gets really cold, by putting the quilt inside of this bag, and it gets TOASTY. Highly recommended!

Warm and well made

I bought this 15 degree sleeping bag bc I thought the design was brilliant. I love that it secures to the sleeping pad almost like a fitted sheet. I roll from one side to the other multiple times during the night and have trouble staying on a sleeping pad so this seemed like the smartest sleeping pad ever.I have used this on one trip so far and the temps got down in the 60's F at night. I was also using Sea to Summit Comfort Blend Sleeping Bag Liner (HIGHLY RECOMMEND) as well as a Big Agnes sleeping pad. My clothes were a lightweight short sleeve shirt and a pair of shorts. Other details are I am a female, 5'6", weighing 155 lbs.I do not think this sleeping bag is a good fit for everyone. You have to have a rectangular sleeping pad. If you have a tapered sleeping pad, the sleeping pad will not attach snuggly. Also, the portion of the sleeping bad that is directly against the sleeping pad is not really insulated, so if your sleeping pad is not rectangular, it will leave some area that has no insulation beneath you.I did not have my bag zipped most of the night bc I like hanging a foot or leg out when I get too hot. One thing that I noticed was if I put my feet at the end of the bag I could hang my feet over the end of the sleeping pad at the bottom. I'm not sure if that is everyone's experience or if it was bc I'm not tall enough to fill the bag. When I hung my feet off the end of the pad it created a cool area, which I liked at the time. If the weather had been colder, I'm not sure I would have enjoyed it.The last great feature which was a complete surprise was there is a pocket inside the sleeping bag to put your camping pillow and hold it in place. It won't hold a large camping pillow, but a medium to small one will fit just fine.When I did have the sleeping bag fully zipped I could sleep on my side with my knee out to the side. If I were significantly taller, I'm not sure the bag would be wide enough for me sleep in that position.Overall, I love this sleeping bag and my favorite feature is it attaches to the sleeping pad.

I was initially hesitant on buying expensive sleeping bag but after my backpacking trip, I realized I made the right choice. It kept me warm in high 30deg weather and the feature of strapping the sleeping pad underneath ensured I never fall off the pad. You have to be careful with the zipper but everything else is just as advertised.

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Like most Big Agnes products, well made and very user friendly. The pad sleeve on the back and pillow sleeve on the inside make the bag so comfortable, it feels like cheating in the outdoors.

To small for my size, very tight even though I am 5'10". Going to buy a larger size.

The sleeping bag is exactly as described. Shipping was fast and it was well packaged. Haven't gone camping yet so i really haven't tested the bag itself out. The construction of the bag seems to be of very high quality.